how to rig live2d

in the download is usually what they say they give, a . zombie train to busan 2 psd file, a model, etc. i ll be back to love you again If it's a psd, find a rigger to rig the model or download live2d and rig it yourself If it's already rigged (not a psd file) then you're ready to go to use it for whatever! well that's if it's allowed, some people just want their models for personal use